FreshEd #427 – Problems with standardised effects sizes in education evaluations (Jack Rossiter)

Today we unpack various sources of distortion when calculating standardised effect sizes in education evaluations. This might seem technical, but understanding how measures of effectiveness are calculated can help us temper the confidence we place in claims about "what works." My guest is Jack Rossiter.

Jack Rossiter is an independent researcher and non-resident fellow at the Centre for Global Development. Together with David Evans, Susannah Hares, and Catherine Henny, he recently co-wrote the working paper entitled “The Illusion of Comparability Among Standardised Effect Sizes: Why Education Evaluations Should Report Raw Effects.”

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